[Dovecot] Moving mail between folders

Hi,

Ive just installed Dovecot and postfix and Ive created a whole bunch of folders and started moving my mail around.

Ive noticed that it copies the mail to the folder I wish to move the mail to and leave the original message waiting to be purged in the original folder

Is there a way to have dovecot delete it straight after it has been moved? as I don't think users are going to take well to this change?

any help would be appreciated

Thanks,

Ilo.